oooh bunny is up too! Yeah I know the shoulder placement sort of kills the whole moebius thing, I just thought I'd suggest it to shake things up a bit. The central chest placement could be slightly tilted too, to give more feeling of space.

cool! I like the first placement because at first sight you can't tell that it is its own tail what it's gonna bite. It definitely makes you want to look at the back of the shirt to figure out what's going on. Very interesting design.